yamaha f150 running problem

[dogmam]

I have a a 2007 yamaha f150 it ideals fine it run in gear with muffs on it out off water but when i put it in the water and take off it runs for a second then bogs down anyone have any ideas.

 

[99yam40]

My only thought is the motor runs fine with no load on the motor, but with a load there is not enough fuel to handle the load

make sure the fuel rail pressure is in spec

 

[racerone]

Do a compression test first.----Any sign of water in the oil ?

 

[dogmam]

Do a compression test first.----Any sign of water in the oil ?

no water in the oil

 

[dogmam]

My only thought is the motor runs fine with no load on the motor, but with a load there is not enough fuel to handle the load

make sure the fuel rail pressure is in spec

do you think it could be the fuel filters or the vst

 

[99yam40]

do you think it could be the fuel filters or the vst

1st thing you need to do is find out if the rail pressure is in spec when the problem shows up

 

[boscoe99]

When the motor starts to bog down mist some gasoline into the air intake. See if it picks and runs better.

 

[dogmam]

When the motor starts to bog down mist some gasoline into the air intake. See if it picks and runs better.

Okay all I did was push the primer bulbe a few times and now it runs fine any explanation

 

[dogmam]

1st thing you need to do is find out if the rail pressure is in spec when the problem shows up

so this morning i went to the lake to check out the boat i haven't done anything but pump the primer a few times started the motor and took off the motor runs fine now could there have air gotten into the line?

 

[99yam40]

so this morning i went to the lake to check out the boat i haven't done anything but pump the primer a few times started the motor and took off the motor runs fine now could there have air gotten into the line?

if the fuel system leakes before the lift pump on motor, it can suck air in.
pumping the primer bulb would fill the VST so the pump inside of it could pump the rail up.
running the VST pump without fuel in the VST to pump, cannot cool and lube that pump and harm it.
but if the problem shows back up pumping the primer bulb will help tell you where the problem is.